The Transverse Temporal Sulci Of The Human Brain In A Lateral View

Description

Obliquely on the superior surface of the temporal lobe, the transverse temporal sulci (sulci temporales transversi) appear as narrow clefts separating the transverse temporal gyri (gyri temporales transversi, Heschl gyri). In lateral view the animation tracks the temporal operculum as it opens conceptually toward the Sylvian fissure (lateral sulcus), orienting the viewer to the superior temporal gyrus laterally and the insular region deep to the opercula. Anterior and posterior transverse temporal sulci are presented in sequence where present, with the gyri between them shown as short transverse ridges running roughly mediolateral relative to the long axis of the temporal lobe. These sulci matter because they bound primary auditory cortex (Brodmann areas 41 and 42), a region whose gyral duplication and sulcal patterning vary widely between individuals and can confound surface-based localization. The animated progression makes it easier to keep opercular landmarks straight while appreciating how the transverse temporal sulci relate to the posterior ramus of the lateral sulcus and the planum temporale posteriorly, a frequent site of interest in language lateralization studies. Small structures. Big consequences. Use this clip in neuroanatomy teaching on temporal lobe surface anatomy, in otology and neurology lectures that connect auditory pathway physiology to cortical targets, or in figure development for papers discussing fMRI, MEG, or intraoperative mapping around Heschl gyrus during tumor or epilepsy surgery planning. Anatomical accuracy verified by SciePro's Medical Advisory Board.